Method of granulating slag.



PATENTED DBG. 13, 1904.

ING SLAG.

2 sHBET-SHBET 1.

MGDUWBL GRANULAT 0N FILED DEO.

J. G. METHOD 0F V APPLAT Y N0 MODEL.

Vslag-sand, which may UNITED STATES Patented December 13, 1904.

l?ariitrr`` OFFICE;

JOHN o. MCDOWELL, or rrrjrsnune,rnuNsYLvAuIAQ METHOD. oF casanULATING.A s LAG.

SPECIFICATIGN forming part of Letters Patent No. 777,388, dated December 13, 1904.

Application lllad December 29, 1903. Serial No. 186,950. (Nospecimens.)

'o (LZ/l whom, it Duty concern:

Beit'known that 1, JoHNGr. lliIcDoivnLL, ol Pittsburg, Allegheny county, Pennsylvania, have invented a new andV useful Method ot Granulating Slag, of which the following is a full, clear, and exact description, reference being had to the accompanying drawings,

forming part of this specification, in which-r Figure l is a sectional side elevation showing one foi-mot' apparatus for carrying out my invention. Fig. 2 is a top plan view of the same, and Fig. 3 is a perspective view shoiving another' forni ot' apparatus.

My invention relates to the manufacture ci be used as a substitute for ordinary river or pit sand; and the object of the invention is to act upon the stream of liquid slag in such a manner that the water jot or .iets willact upon the same eiciently in granulating it.

To that end the invention consists in spreading the slag stream, and thereby producing a dropping sheet ot' slag, and then drivinga water-jet, also preferably in the form ot' a sheet, against the dropping slag layer. y

The invention also consists in splitting the stream of slag to spread it before acting' upon it with thc water, and, further, in the steps `hereinafter described, and set forth in the claims.

ln the drawings, referring to the lForm ot' Figs. 1 and 2, Z represents a slag-spout of any suitable form leading from a pool or source of slag and overhanging a pit 3. 1n front of and below the spout is a splitter 4, which I have shown as of conical form carried upon a tubular support 5, rising from the bed-plate 6 at the bottoni of the pit. The deflector flis so arranged that its apex will be approximately at the center of the dropping slag stream, and the slag is thus split 4into au annular sheet which drops lrom the `edges of the cone. This huid-slag sheet is then acted upon by water-jets `7, of which I have shown three, each preferably having a horizontallyflattened arc-shaped nozzle. These Jets `are spaced apart around the cone, and the jets of Water under pressure preferably strike the slag sheet just below the edge of the cone. The nozzles are flattened for the purpose ot' `parts of the tcrgiets and the shape oi thc nozzles may, hoiv i causing thevvater to act upon the different The number of these wa ever, bc varied widely withontdeparting from my invention.

ln carrying out my process the slag is al lowcd to flow through the trough and drop upon the cone, which splits it into the annularsheet forni. The jets ot' water are then driven against this sheet, thereby converting the slag into granulated 'form of comparatively srnall-sized particles, the particles drop ping into the bottom ot' the pit, may be lifted in any suitable manner. The pit may be provided with a suitable overflow foi-,the Water..

In the form of Fig. 3 instead ot' a splitting device Al show a spreader 8. `'lhs spreader in the form shown consists ot' a casing having a curved or concave inner face, upon which the slag stream drops from the trough Q'. The stream is thus spread out horizontally and drops from the edge 9 ol the dcflcctor in sheet form. *The spray-nozzle 7' may be the same as before, except that its edge is preferl able straight and parallel with the odge ot' the deliector. rl`he dellector may be supported upon I-bcam l0, extending across the pit, or in any other suitable manner.-

'lhe advantages of my invention result Vfrom the ellcient action ot' the Water due to the spreading ot' the slag into sheet `form. The

water is thus enabled to act upon thedill'orcntV the slag sheet; substantially as described.

Q. The method ot' treating liquid slag con sisting in splitting a stream ol fluid slag into whence they IOO sheet form and driving liquid jets against the sheet forrn and thendriving water against the split portions of the stream; substantially as slag'sheet after spreading and while dropping described. freely through the air;l substantially as de- 3. The method of treating liquid slag` conscribed.

5 sisting in splitting a Huid-slag stream into In testimony whereof I have hereunto set I5 sheet form and driving flattened jets of water my hand.

against the different portions of the Split JOHN G. MCDOWELL. stream; substantially as described. Witnesses:

4. The method of treating liquid slag con- JOHN MILLER,

10 ssting in spreading a stream ot' fluid slag into H. M. CORWIN. 

